A partner and structured credit specialist at Renshaw Bay, the investment boutique founded by former JP Morgan banker Bill Winters, has left the firm.

Matteo Sotti had been a partner at Renshaw Bay since December 2011, a month after the firm gained regulatory approval to do business, according to the UK's Financial Services Register.

Sotti ceased to be a partner at the firm on January 30, according to a filing at Companies House, and is now listed as inactive on the Financial Services Register.

Sotti is a structured credit specialist, who had been a managing director and head of structured credit trading at Italian group Unicredit from 2007 until 2010. Before that, he spent seven years in structured credit at Deutsche Bank, where he was a managing director, according to his LinkedIn profile.

Companies House records show that Sotti had been one of 14 partners at Renshaw Bay, a limited liability partnership set up by Winters, a former co-chief executive of JP Morgan’s investment bank who was voted the most influential person in the European capital markets in the annual FN100 list shortly before leaving the US bank in late 2009.

The company did not respond for a request for comment on Sotti's departure this morning in time for publication, while Sotti did not respond to a LinkedIn request for comment on his departure and future plans.